Time and Distance Questions

FACTS  AND  FORMULAE  FOR  TIME  AND  DISTANCE

1.Speed = DistanceTime,  Time=DistanceSpeed, Distance= Speed×Time 

 

2. x km/hr = x×518 m/sec

 

3. x m/sec = x×185 km/hr

4. If the ratio of the speeds of A and B is a:b , then the ratio of the times taken by them to cover the same distance is or b : a

5. Suppose a man covers a certain distance at x km/ hr and an equal distance at y km/hr . Then, the average speed during the whole journey is 2xyx+ykm/hr.

Q:

A man travels 50 km at speed 25 km/h and next 40 km at 20 km/h and there after travel 90km at 15 km/h. His average speed is

A) 18 B) 25
C) 20 D) 15
 
Answer & Explanation Answer: A) 18

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Q:

Two cars travel from city A to city B at a speed of 36 and 54 km/hr respectively. If one car takes 3.5 hours lesser time than the other car for the journey, then the distance between City A and City B is

A) 454 km B) 567 km
C) 302 km D) 378 km
 
Answer & Explanation Answer: D) 378 km

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Q:

An object travels 23 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

A) 7.6 m/s B) 8.0 m/s
C) 7.6 m D) 8.0 s
 
Answer & Explanation Answer: A) 7.6 m/s

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Q:

A man travelled a distance of 60 km in 7 hours. He travelled partly on foot @ 6 km/hr and partly on bicycle @ 12 km/hr. What is the distance (in kms) travelled on foot?

A) 15 B) 9
C) 48 D) 24
 
Answer & Explanation Answer: D) 24

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Q:

Abhay and Chintan are riding their motorcycles. They start from the same point. Abhay rides 7 km North, then turns to his left and rides 4 km. In the meanwhile Chintan rides 6 km West, then turns North and rides 7 km, then turns to his left and rides 8 km. Where is Abhay with respect to Chintan?

A) 4 km East B) 10 km West
C) 4 km Wes D) 10 km East
 
Answer & Explanation Answer: D) 10 km East

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Q:

Two cars travel from city A to city B at a speed of 30 and 36 km/hr respectively. If one car takes 3 hours lesser time than the other car for the journey, then the distance between City A and City B is

A) 648 km B) 810 km
C) 432 km D) 540 km
 
Answer & Explanation Answer: D) 540 km

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Q:

Two cycles start from a house with a speed of 24kmph at interval of 15 min. With how much more speed in kmph the woman coming from the opposite direction towards the house has to travel to meet the cycles at an interval of 10 minutes?

A) 13 B) 11
C) 12 D) 14
 
Answer & Explanation Answer: C) 12

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Q:

A train has to cover a distance of 900 km in 25 hours. What should be its average speed in meters/second?

A) 20 B) 10
C) 18 D) 36
 
Answer & Explanation Answer: B) 10

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